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How can a change in a solvent system lead to precipitation?

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The precipitate is insoluble in the resulting solution, it may or may not be soluble in any other solvent. For example:- HCl + CH3COOPb → PbCl (precipitated) + CH3COOH. Here, PbCl is insoluble in CH3COOH hence is precipitated out, but is highly soluble in warm water. I hope this answer helped. read more

The water will fall out of the air as rain and all that energy given up as gas changes phase to liquid manifests as winds, storms, and lightning. Then next morning as the day warms much of that water goes back to being vapor and rejoins the air, only to fall again as the day cools. read more

Precipitation reactions can be used for making pigments, removing salts from water in water treatment, and in classical qualitative inorganic analysis. Precipitation is also useful to isolate the products of a reaction during workup. Ideally, the product of the reaction is insoluble in the reaction solvent. read more

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